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基于水凝胶的细胞外囊泡递送系统在再生医学中的研究进展

Research progress of hydrogel-based extracellular vesicle delivery system in regenerative medicine

  • 摘要: 再生医学是通过替换和修复受损的组织、器官使其恢复正常结构与功能的科学,其常用技术包括组织工程、器官移植、无细胞治疗等。其中,无细胞治疗降低了免疫排斥的风险,减少了致瘤性,成为再生医学的研究热点。近年来发现的细胞外囊泡(extracellular vesicles,EVs)为实现无细胞治疗拓宽了道路。EVs是由几乎所有细胞释放到胞外的膜性囊泡,是细胞间通信的重要媒介,它们作为治疗药物和药物递送载体具有广阔应用前景。然而,基于EVs的治疗存在半衰期短、缺乏靶向性及滞留性等问题。生物材料水凝胶可一定程度提高EVs在体内的稳定性和滞留性,基于此,研究者们探究了基于水凝胶的EVs递送策略。本文系统综述了近年来基于水凝胶的EVs递送系统在再生医学中的研究进展,探讨了其在临床应用中的前景和挑战。

     

    Abstract: Regenerative medicine focuses on replacing and repairing damaged tissues and organs to restore their normal structure and function. Common techniques in regenerative medicine include tissue engineering, organ transplantation, and cell-free therapy. Cell-free therapy has gained attention due to its potential to reduce immune rejection and tumorigenicity, emerging as a prominent area in regenerative medicine research. The advancement of cell-free therapy has been facilitated by the discovery of extracellular vesicles (EVs), which are small membranous structures released by cells and play crucial roles in intercellular communication. EVs show promise as therapeutic agents and drug delivery vehicles. However, challenges such as short half-life, lack of targeting, and poor retention hinder their effectiveness. Hydrogels offer a solution by enhancing the stability and retention of EVs in vivo, thereby improving their therapeutic potential. In this context, researchers have explored hydrogel-based delivery systems for EVs. This review systematically summarizes recent developments in hydrogel-based EVs delivery systems within the field of regenerative medicine, highlighting both opportunities and challenges for clinical applications.

     

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